I'm Sorry I dont know too much about this motor other than driving it. I know more about the LS 00-14 LS platform. I called summit racing

JB-2079 at $17 a pc $300 shipped
fel pro gasket set to complete the job 7733pt16 $81

Does LS7 lifters fit? A set is of SUM-HT215-16 is only $170 or i can get SUM-HTLSKIT2 lifters and trays $204

Edit. Found them just poking around on Amazon. Lifters are also confirmed with reading reviews.- lot cheaper too. Confirmed the gasket set. More complete set on Amazon. Left # to help someone else.

lifters GM Performance 12499225
https://www.amazon.com/dp/B000QIUGNM/?coliid=I8VG0ZYLSBRWM&colid=2WHMI5GDY4S4&psc=1&ref _=list_c_wl_lv_ov_lig_dp_it

Gasket FEL-PRO HST 7733 PT-16
https://www.amazon.com/dp/B001C98GAO/?coliid=I282OYTMGHDAO4&colid=2WHMI5GDY4S4&psc=1&re f_=list_c_wl_lv_ov_lig_dp_ii

 

Call them up or visit the parts counter with your VIN. It's their job to give you the right parts.

 

https://www.rockauto.com/en/moreinfo...371327&pt=5548

 

I had a feeling summit was marking up on the lifters. Thanks