I have for sale a ported valve housing for Impact MKI models. The body has 3 ports just like the new style valve housings, plus porting on the bottom in case you want to add an external plenum. This is probably the single-most effective power upgrade for your MKI Impact.
Please note - this valve housing will not work with MKII models with the larger valve tube. $35 shipped CONUS to PayPal F&F. PM me if you have any questions.
Please note - this valve housing will not work with MKII models with the larger valve tube. $35 shipped CONUS to PayPal F&F. PM me if you have any questions.