seems like youve been able to get pretty decent prices on stuff so far
all brand new $700 isnt too bad, but I'm sure another second hand $200 one will do fine.
spent the $500 saved elsewhere on the car, brakes, suspension, weber
a healthy stock 12A with a weber (properly tuned) and a decent exhaust will go pretty well in a light corolla
u should make 100ish rwkw, mine makes 155rwkw and it absolutely hammers