Val,
from wat i heard of RX7, let me share wif u.
rx7 power is damm super greater felt compared to piston turbo engine. definitely u feel super power from rx7 compare with ur b13. moreover rx7 is rear wheel so u can feel the G force pushing u from the back. and rotary engine has a very goood and better acceleration. so imagine how much feeling u will have when u accelerate from 0-infinity km/h
the rest i would say that for every hp that rotary engine produce it is equivalent to a horse drinking petrol inside there. hehe...............
and if u want to play wif rx7 on drift of drag or race, make sure u can hold the sterring professionally and expertly cozs u can easy lost control when the BIG PUSH coming from the rear wheel.
my fren driving corrola with 3SGTE 200-250hp on wheel felt almost lost control when accelerating a rx7(not on full throttle yet). he said handling wise for rx7 is damm difficult cozs got a massive power on the rear wheel. maybe u need to install microsoft help to guide u handle the steering. hehe............
just my 1 cent opinion.....