I just ordered the LT1 MAF. I talked to the guy at Full throttle and based on my combo with a street strip car he said the 3" LT1 would suit my needs just fine in to the high 10's. I could have went with the LS1 and maybe down the road I might but if I step up how I want the car to run.
I hope to have it on the car this coming week. If you have a little time to wait I'll report back on how it does vs the stock MAF.