OK, and i'm not sure if fits 57 or 54. I've the Dr Rossi eprom for 57's, and with the 51's the mix are too rich. The best with this eprom are the 57, but may be possible return to oem and fits one 54 TPs.
I accept offers from 57's and 54 TP's!!
if you have the eprom for 57's then get a set of 04 onwards thottle bodies...you need to block off 3 pipes and get a set of convertor leads to mate you pld loom with the different shape connectors
remember to get the 57mm velocity stacks as well tuono ones bring the power in earlier as they are slightly taller ...go best with other mods..i.e modded airbox and dual system or modded header