Just to update this, and maybe provide a talking point, I have some good and bad progress to report.
The good:
The SVE radiator is in and works fantastically. No leaks, and holds temp well on an 85 degree day. I put 35 miles on the car yesterday breaking in the clutch.
I also installed new weather stripping on both door jambs and the hatch, as well as new striker bushings. That really tightened up the door, but I can tell my window tracks need a do over, as
@Mustang5L5 did.
The bad:
I caved in and bought 3" Flowmaster exhaust tips rather than have a shop custom bend the exhaust I wanted. STUPID.
They dont fit worth a

with my used MAC mufflers. Rather than box them up and return them like I should have, I decided to MAKE them work. STUPID.
On the passenger side I had to dent the piss out of the over the axle tube to ensure clearance of the axle and upper control arm. It just barely keeps from rubbing my gas tank tank cover, and thats after I cut off 2" of the pipe where it meets the muffler. I am not wanting to weld it all together, because I would like to be able to remove it to continue my under carriage painting. That means after spending $300 on it, I had to spend $25 more on four 3" clamps, as Flowmaster includes exactly zero clamps to fit the four pieces together, and to the mufflers...
On the driver's side, I had to cut 3" out the flow tube between the muffler and H pipe and weld it back together. That was just to get the clearance to start fitting the over the axle pipe. Its still going to need massaging to clear properly.
Moral of the story, once this is all done I truthfully need to remove my entire exhaust system, check my welds for leaks, grind them pretty and paint the whole thing with high temp paint so that it doesnt all rust apart in a year. Should have just bought a full H Pipe and Cat back versus piecing it all together. I am a RA-TARD.
Also while under the car I found that my transmission output shaft seal is leaking and splattered trans fluid on my new tunnel paint, as well as my pinion seal having a minor leak. Yay!
And no, no pics. Its ugly as fck and not finished. Just a rant.