the point of an rx7 is the high r.p.ms. if you want a v8 get a vett. they are getting cheaper. need better mpgs? find a cheap geo or something. these cars are the only cars built around the rotory so why lose that. it might not be cheaper for you at first but look at buying a shell if you want to do a swap. your vert is in all honesty one of the cleanest around. keep it that way and build your race/drift car on a shell. fc shells are dog shit cheap too.