Do not waste your money on a 2.8LSS. Too expensive, and it looks to be a roll of the dice HP wise. If you want a 2.8L, just build a LS and keep it below 8000RPM. You will be fine. Or just buy a 3.0L
My next race motor will be a 2.8L LS carefully built to max HP under 8000rpm.
I currently only take my 2.5L SS to 7800 RPM, sometimes 7900 RPM for longevity. I run my race motors for 100hrs per builder.....Yep- no failures.