tHANKS guys,well getting 5000 lbs to move is pretty tough--I modded my Imp-alla SS back in 96--had the LT4 setup heeads/cam etc--Losing low end torque on a truck is definately not the way to go on a heavy vehicle--even if you add 100 peak horse and take a sec off the quarter mile the fun factor is gone around town with poor low end torque...That said I am thinking of going to a 99 mm bore wich gives close to 350 cubes.I have read that you can bore the 5.3 to that size.It also gives the opp. to put in forged in case I will afford some forced induction some day! Well Iplan to keep this discussion going,I'll let y'all know what I come up with as things progress.I am going to price out az new motor too--scoggin Dickey has the new lq9 complete without a computer but with WP,injectors etc for about 4K thats rated at 345 horse.That motor with a cam (ls6) and long tubes and stiffer valve spring to turn up to 6500rpm should make a solid 350 hp at the wheels.If I can get the cash,thats the way I may go too----Thanks again for your input.BTW,How can I put a pic of this thing up on here?