My motorhome is a 1995 Class-C Ford E-350 with a 460 EFI engine...I have upgraded the exhaust with Thorley headers following the dreaded exhaust leaks and snapped bolts...I am now ready to upgrade wit...
I had one bolt that was snapped'off before the header job and one bolt snapped when removing...both had to be drilled and with an easy-out, both were removed...the doghouse has to come'off for access...not a problem...you have to plan on one or more snapping when the stock manifolds are removed...