Randys:thumrigh:i've had good luck with them,i'll be calling them soon myself to have another 489 with 4.30's and a spool built..my combo:340 stroked to 416,mopar crank,eagle rods,diamond 10.9 to 1 pistons,Edelbrock heads w/street port job nothing crazy just cleaned-up and polished,Comp magnum rockers,Lunati voodoo cam .533/.552,Air Gap intake port matched,quickfuel 850 carb,full msd ignition,tti headers..904 w/low first gear,3500 stall converter.8 3/4 w/3.91's and trac-loc unit..best e.t. so far 11.02@120 best 60' 1.42...hopefully i'll be in the 10's with the 4.30's...