Degreeing the cam requires pulling the timing cover and a new gasket set. For what you are doing, I'd suggest leaving it alone. There are things you can do to get more power out of it, like setting the cam degree a few advanced, confirming bore size, head volume, compression distance, overall initial compression, to tune the rest, but for what you're doing On your budget Duster, put it in with a twenty dollar jug of Lucas SAE30 break in oil on a Wix filter and fire it up.
