[lxndr]

It will be easier to turbo a D16A1 or a B16/18. You can rebuild your D15A3 but aftermarket performance parts are near impossible to find. An H22 from a Prelude fill fit with alot of modification and stiffer front torsion bars, but this will also leave you with drag strip only car. The H22 is so heavy that your car will handle poorly on the street, the 1g CRX just doesn't have the suspension design to handle the extra weight. A D16A1 from an '86-'89 Integra will practically drop right in but aftermarket parts are dwindling. The B-series motors will be your best choice since aftermarket parts are plentiful and you can get everything you need for the swap from Hasport. A B18 will make your car SCREAM! Check with Red Pepper Racing since several people have done a B-series swap and can give you some useful advise.