BSR Twin System (tm)
Join Date: Aug 2001
Location: The TQE (tm) Plant.
Usually two reasons, as someone already said, cost and ease of fitment.
Yes, the old "250 2V" engine (XY & XA) ran factory extractors, as did the XY GT-HO Pase III, XA Falcon GT RPO83.
Falcon G.T. Club of Geelong Inc.
Deakin University Formula SAE Car PHANTOM ENGINEERING
LSUG (Leaf Spring Users Group) Twin System Engineer
Official BSR Website - www.bsrcorp.com
Poster of the 150,000th post!
BSR "DARTH HELMET (tm)"
Marcos Ambrose & SBR, 2003 & 2004 V8SUPERCAR Champions