When i got into Rx7's everyone was swapping out bumpers for aftermarket (mainly front) left right and centre, by the time i was getting out of my last one, everyone was looking for std bumpers again. I am the same as Ekona though, i think the Rx7 (fd) is a gorgeous car, bearing in mind its now 20+ years old i think it has stood the test of time incredibly well, probably one of the prettiest cars to come out of Japan, same as the Nsx, although not quite as nice imho.
I think the R34 looks good out the box, maybe a few subtle tweaks but you could throw as much fiberglass as you like at a 33 and its still resembles a blancmange imho, just too rounded and fat, only personally of course.
I like rocketbunny on certain cars, 350 being one, but it is just a little to generic, same design adapted for each car. You have to have the show to match the go if you really want to pull it off.
My first Rx, totally std apart from wheels, headlights and spoiler
Interesting though i never saw an aftermarket Rx7 rear bumper that was better than original, pretty much the same for the 350, the only exception is the chargespeed, but the fact its so close to oem is why it works