Calling all 60-2 Valiant and Lancer owners, info needed

Here's the engine compartment of my '62 V-200 more door daily driver. It has a warmed-up 360.

View attachment 1715373377

I like that. I am still trying to decide whether to replace the 170 slant with the 225 I picked up or drop in the 318. I had the oem lant rad recored for the oddball and hate to waste it ($400). sb radiator? Ii gues the SB gave you room for a standard sb radiator?
What exhaust man. did you use or headers?