got pics of the Supra???
as for your civic....swap in a B18C or B16A engine
all sorts of companies make exhausts for your honda. APEXi, Tanabe, Thermal, HKS....same people whom make exhausts for your Supra for the most part.
a "Spoon" engine is an engine that comes from Spoon Sports. they run about $8k+ so....oh and unlike the fast and the ***gish, you dont put a T66 turbo on it and/or nitrous.
the blitz filter blows to tell you the truth. it allows quite a bit of dirt to get in. the APEXi unit is better, so is the K&N unit.
oh and welcome to the site