turbo kits are fairly cheap these days can be done well for under 5k. when ur doin the engine conversion make sure u dont skimp on parts and quality. Take your time and do it right the first time. Eg is a great starting shell and the options are endless. i thinlk the worsed part of the conversion is going to be the carb - > EFI but there are a few threads on here that can help with that and depending where u live there are members that are willing to help.
heres a couple of threads to start u off:
http://www.ozhonda.com/forum/showthread.php?t=47020
http://www.ozhonda.com/forum/showthr...efi+conversion