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Dwight Southerland · 06-21-2016, 12:46 PM

Depends on what you have. As a general rule, the later heads are better than the early heads. But the T is not necessary. It's just that the T heads are all late production heads.

06-21-2016, 12:46 PM	#3
Dwight Southerland VIP Member Join Date: Dec 2001 Location: Arkansas - In the middle of everything. Posts: 1,980 Likes: 53 Liked 724 Times in 177 Posts	Re: 520 heads Depends on what you have. As a general rule, the later heads are better than the early heads. But the T is not necessary. It's just that the T heads are all late production heads. __________________