I put a set of the Pro Comps on my daughter's 5L Mustang. Not bad for the money really and with a stock 1985 Ford Mustang 5.0L roller cam (around
[email protected], 0.448 lift) they put down right at 260 rear wheel hp on a Dynojet. Compression 8.5:1, all stock bottom end, Edelbrock Air Gap intake. Heads...