hey Tom that was at Norwalkit had run a4.75 at147 the air got better my friends thought it would go that so I put it on the window.im sure once I get the clutch right and the gearing in the lenco right it should go faster.im thinking of getting a lithium pro battery its 30 lbs lighter than the rock battery and I have 30 lbs of weight in the rearthat should be 6 hundreths.it should go high 4.60s.pete went 4.76 and 7.39 at Chicago with his pso.im already planning a aluminum block,and acs3 lenco to get 200 lbs out of the car.hopefully it would go 4.50s that would be in the 7.17 range. how is your predator motor?im going to have fun with it next year and when I freshen it it will get the aluminum block.