PerTronix JBA Exhaust 6656S - Manual

Installation Instructions
and Warranty Information
For ’67-’70 390/427/428 Mustang
Part# Application Notes
6656S 67-70 Mustang 390 GT 41, 42
6655S 67-70 Mustang 390/427/428/428CJ C6/C4 39, 41, 42
6654S 67-70 Mustang 390/427/428/428CJ 5spd 39, 41, 48, 49, 50
Rev. 11/05
Read all instructions carefully before attempting installation.
39 Will not fit standard 390 cylinder head.Head flange is designed for 14 bolt 390 GT cylinder head only.
41 Fits most rack and pinion conversions.
42 Requires JBA power steering ram drop down bracket for use with factory power steering.
43 Not designed for 5 spd trans applications
48 Fits 5 spd w/aftermarket cross member
49 Will not fit factory power ste ring.Fits manual steering.
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50 Fits aluminum Shelby block