They say it doesn't make any difference, but I remember when I did mine and thought it did. Faster spool up as well.Installed grid heater delete, and new tube. I'll have to post a picture later as, I forgot to take one when I put it on. I actually found a pretty decent deal on the tube, so with the tube and the block, I still paid about the same as what replacing the dead heater grid would have cost me. I live in central Alabama so, we don't have too many REALLY cold temps here. When we do it's usually just a few days at a time. So that's why I went with this option.
ARP EVERYTHING!!!Wanted to mention that when I put my rebuilt front driveshaft in last year I sought out some better hardware on the axle end. I never had a problem with the factory internal torx bolts but really hated dealing with them. I found some ARP 12pt bolts that fit the bill.
edit* bad link
McMaster Carr pn 93700A218
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Jackson, where's all the tranny fluid leaking from???
very nice 12 point bolts, well done