hi all, Im building a 73 Nova with my 14 year old son. We will be LS swapping a 5.3 DBW/P59 with the unsupported 12579405 (yes I did alot of reading already) from 2003 Silverado. We sourced a 4L80e from a 2003 express van DBC. I will ask my Qs in the forum after I do some more reading .