does any one no of any good mods such as pistons cams air filter or other power kits and is there a web site i can visit that has a decent price on these items!!!!

 

Fourlix put a HO cam in his 425. Seemed happy with it. If you can hunt him up I'm sure he could help you. He has a very good post labeled 425HO or 425 HO cam or something of the sort. Check the archives & you should see it.