High performance PolyDyn coating. From late '03 thru '07 with #1 & 5 housing ID of 2.347". With 0.640" wide shells.
4.8L / 293 OHV V8 16V Chev. LS Gen III/IV 96.00mm Bore 99-14
GM
5.3L / 325 OHV V8 16V Chev. LS Gen III/IV 96.00mm Bore 99-17
GM
5.7L / 346 OHV V8 16V Chev. LS Gen III 99.00mm Bore 97-05
GM
6.0L / 364 OHV V8 16V Chev. LS Gen III/IV 101.62mm Bore 99-17
GM
6.2L / 376 OHV V8 16V Chev. LS Gen IV 103.25mm Bore 07-14
GM
7.0L / 427 OHV V8 16V Chev. LS Gen IV 4.125" Bore 06-15
GM