Hey Drew,
First off, welcome to the Vert club. A couple of quick questions for ya. Are you looking to drift the car? Are you looking for straight line drag racing? Are you looking for a street monster? I know the answer from any young guy would be yes.. all of them, but you're build for each of these are going to be different. Ease of swap - hands down the SR. If you send out your harnesses first, when you get it back you can swap out the KA and swap in the SR in a weekend (faster if you have a few hands to help out). I daily my SR with only a little bit of a bump in boost (pushing a modest 10-11 psi). I've dyno'd out at a steady 215 to the wheels. Now I will say it was hard to have fun before the upgrades I've done. Suspension (get them... get stronger spring rates if you can as verts are a bit heavier), Thicker sway bars front and rear (one of the single biggest cheap upgrades that changed the ride dramatically), LSD rear diff (open diffs are no fun.. period). I would have to agree that anything over 300 hp in these cars are a handful, but more in that you really can't hold traction without some serious upgrades. I think playing at the 250-300 level until you get used to the car would be a great start. I will also say that a lightweight flywheel and good clutch setup will also allow the engine to spin up faster and make boost faster. It is a fun platform to play with and lots of options to explore. SR = easiest, KA-T = a bit of motor work and purchase of turbo, ECU, Mani, wiring...etc, RB = big power potential, but expensive, harder to get parts, heavier motor - throws natural balance of car off a bit, Wiring, custom mounting kits, transmission swap issues, LSx = tons of torque, but not rev happy... transmission selection, custom driveshaft. From a bang for the buck standpoint- SR all the way. Hope that gives you a bit of insight or help.
Good Luck and get some pics up and hit the Registry.
