I love the build man. Turbo will definitely be cool and be pretty responsive with the higher compression on the na motor as long as the tune is okay on it. You sound like me talking about my car being slow haha I drive a single cam ka with stock rear, 215/40s probably 50 psi cold depending on track surface and temp. But it?s relatively torquey for what it is. Contemplating chucking a 4.3 rear in it. I?ve done a pretty big oval track with it and it was fine but you are entering at probably 45-50 mph so you have a lot more momentum to kinda keep the car loose vs gripping up.
Can?t wait to see the progress! Remember to keep your foot down