What's up guys I've been lurking on the board for a bout a year now. I'm currently set up with an o4 gmc xtra cab with patriot alum. heads , mac long tubes, hi flow cats, magnaflow si/so mufflers,2/12 true duals, eaton posi , 3/73's fully built 4l60 ( billet vette servos vac modulator pump/ precision ind.3000 stall, stage 3 shift kit)tranny -: installer guaranteed 600 horse power for 3 yrs. on tranny w/ warranty)also, 160 thermostat,custom ground thunder racing cam w/ street tune( next week will put on dyno) , k&n true cold air,I am running 20 inch wheels that are 1/8 shorter than my stock 16's...I have a gear vendors over/under that wil convert it to 8 speed auto. My question is this,- i need an opinion on rather I should go to 4.30's or 4.56's for my rear ratio . the gear vendors adds a 25% overdrive ratio in all gears thru gear splitting 1-4 gear into 1 low & 1 hi/2nd low & 2nd hi 3rd low,3rd hi thruout 4th low to 4th hi Has anyone else on thi site used a gear vendors? any feed back appreciated Thanks Richard