One of the EFI cars that I help tune runs 8.90 to 9.00. It is a Studebaker with a 565 BB Chevy engine. Weighs around 3200 or 3300 lbs and makes close to 900 hp. He has a 3.89 rear gear with a Powerglide. Fairly easy engine to build in the BB Chevy world, not too hard to round up the parts to make a 900 hp BB Mopar. You would want an aftermarket block and decent heads, maybe 345 -1 heads or something along that line. Or just build a 572 with 572-13 heads. Costs a little more to build up front but you'll have 1000 hp which should put you deeper into the 8's and it could last a long time if you go with a mellower camshaft.