GSR cylinder heads: What's the difference between P72-1 and P72-2??
Hey Guys:
I've got two GSR heads here. One is stamped with P72-1 and the other is P72-2. Is there any difference?
Thanks
Steve
I've got two GSR heads here. One is stamped with P72-1 and the other is P72-2. Is there any difference?
Thanks
Steve
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