hey all im very new to the datsun life style but im lovin it i have a 1970 521 stock as of right now im looking to put a sr20 in it and i'm having some truble finding info about how to do it and now i know there is a 521 from DGR fab in san jose that did one but i need more info on it and they seem to be no longer in biz soo..... any one out there can help me on wht can fit and wht disc brake coversion kits are out htere as well thank you very much guys