I never had a issue at all with a FD koyo radiator on my 20b n/a. Just had two good fans on it. Went to a few tracks with it, and did surprisingly great. One stock FD oil cooler, and one FC stock oil cooler. That was with a 8,500 rpm 20b making power to that rpm (more heat than usual). On the ignition, 6 bosch coils work great, and are not expensive. Not sure why nobody pointed them out. And if you pony up a little more money on a electromotive, their 6 inductive coils will be enough for even crazy boosted apps.

 

I was just staring at this pic, and I noticed you're missing a whole bunch of stock pulleys.
We kept the PS pulleys, so this drops the clearance.

Aren't you running a race car?


-Ted

 

Yea...who needs PS! As you know I moved everything back about 7" since that pic, but it can fit if you force it a little!

 

and this was with moving the radiator, not even a 1/2" between them and the fan measures 3 3/4" deep with shroud.