stock1992q45 wrote:I wish I would have converted to 134!
No you don't unless you repalce the whole system. The R12 and R134a systems use different components (except maybe for the evaproator coils).
A staright up conversion with R12 parts (after flushing) results in only a 85% efficiency. Best to maintain an R12 system as an R12 system. Be sure to replace all O rings and seals and drier and any suspect hoses as you don't want to lose any R12 no matter how slowly.