Hmm now you have me curious as to why??? Is it just bc it’s an outdated product? So I was browsing the FB fox body forums and cam across a couple of guys who also bought the KB setup from TPS. Lo and behold they each have their Flowzilla kits in from tps and I’m kinda drooling bc I like them. What do I want do? Idk on my current set up now it would make the car even more fun. Now eventually I want to pull this 302 out and toss in a stroker motor which I was headed towards a dart block 363, but have came across a buddy who has a 351 roller block that I’m tempted to buy, just need to find time to drive south 6 hours and get it if that’s what I decide. Now there is all this talk about those blocks being prone to cracks where the cam bearings sit and it has me kinda on edge about it. Now I know there is some ppl that have tossed these blowers on stroker motors and been fine, but is it kinda like a set of heads where it will run out of gas if the motor is to big? Would I be better off going centri at that point if I’m looking to go with a bigger displacement engine? I don’t see turbo in my future, even though the price for an on3 is so reasonable. I like the pro charger set ups, but seeing that the flowzilla is actually available from this company makes me interested once again. The bad thing about the KB is tps is charging 4K, plus 500 for the flowzilla inlet.
Let me start out by saying that when I'm in the car and driving it, it's like nothing else. LoL
It's a 3300 lb go-kart that you will probably never top out on any street. I'm sitting here laughing with a stupid grin on my face as I type this.
I have a Dart Sportsman / 347 / AFR 205s / Blowzilla/Flowzilla / 80mm TB
I tell you what this build needs: More blower and an inter/after-cooler --and-- It needs to be a portion of the hood so that when you open it, the blower rises up with it. LoL
Every damned thing you gotta do to the motor includes pulling the blower off of the top. It's a process to get it all shoe-horned in there in the first place. I have destroyed and fabricated a dozen "special retard tools" in order to get to that one plenum manifold bolt that will have you creating new cuss words even on the times that is goes in "easy".
Be prepared to become a vacuum and oil separation/PCV systems engineer. It will come in handy
Whatever your horsepower expectations: This won't get you there. It will be more fun in your pants than you'll know what to do with but the numbers on paper will be "meh". Your torque curve should look like a shelf though. hahaha
Your 363 idea is probably more displacement than you need for a 2.1/2.2 liter SC. I know that my combo would easily benefit from a 2.5L option and a much better lower intake selection. The GT-40 lower, even ported, is small for these larger displacement small blocks.
A centri-blower is just all around, easier install to deal with. There are more size options available and it's easier to match to the expected output of the engine.
Now if you're doing it because of nostalgic reasons, I'd expect that it would make that 351 a pretty nice package. LoL I'd put in on a stock rebuild with a nice cam and good exhaust system, all day long.

I [still] want to put that same combo into an old Ford pickup. 3 on the tree and a 3:55 rear end with some meat on them.