Aftermarket blocks for roller 5.0 setups

I'm looking into either getting a world man 'o war,dart 302, r302, or the new boss 302 block for my 5.0. Does anyone know which of these blocks are machined to accept a roller setup without having to go with a shorter lobe center cam? I want to stick with a 8.2" deck heigth block and I'm compilating a parts list to assemble a bulletproof shortblock, but I'm having a hard time finding out what final machining is req'd for these block and which ones are roller friendly. Any help would be huge.

I want a bulletproof 331 stroker shortblock reliably running roughly 600-650hp and sometimes more. Maybe 5k to 7k miles a year, occasional trips,several drag events, and two road race events each year. Probably solid roller, I got the idea from you in another post Sbftech, but I might stick with my current hyd. roller setup. I have the top end and blower now it's time for the bottom end. I don't mind overbuilding it for the peace of mind alone. I plan on spending about $4000-$4500 for the shortblock, I've been told that Coast High Performance is a good outfit who'll build any setup you want. I may give them a call. I have most of my mods listed in my garage.

I got ahold of ford and they say the boss302 block will be available in two weeks, or roughly the 22nd of sept. I'm going to get ahold of another rep. and find out if it is roller ready and what machining it req's. I've always been a fan of the boss blocks but if the dart is a cheaper option it may be the way to go. Jeg's says they will sell the boss302 for $1799,95, which is the same price I can purchase a dart block for. Is that your company featured in your sig Rick 91GT? If you can build me a setup (331) let me know, we should talk business. thanks.