I know DSM's have past with 272's, but that's all I know. It all depends on keeping the fuel trims in line at idle, at 3K RPM's, and having had the ECU run throught all it's tests with no codes. Make sure you have it looking stock under the hood, the BCS conected, and the stock cat on. The good news is that we don't have to turn the rollers.
As far as 272' supporting the power levels you want; What are you looking for?
PS,
You won't get slammed for your mods.