RPM
The Rat Master!
This is the headers I was thinking of using.
http://www.afabcorp.com/AFCO_Dynatech_USbrake/merchant.mvc?Screen=PROD&Store_Code=Dynatech&Product_Code=115-841300A&Category_Code=gm-53-truck
http://www.afabcorp.com/AFCO_Dynatech_USbrake/merchant.mvc?Screen=PROD&Store_Code=Dynatech&Product_Code=115-841300A&Category_Code=gm-53-truck