wheel back spacing for a 2004 Nissan Frontier

Does anyone know off hand the correct offset for a set of 22 by 9.5 or 22 by 8.5. i have the truck in peices and i would like to keep going on it. 

in the front on an 8.5 a +35 to 42 is about right...  what rear end are you running? thatll play a huge factor on what width and offset youll need...

ON AN 8.5 WHEEL YOULL NEED NO LESS THAN A +40 REALLY.  I HAD THAT ON MY FRONTIER. AND STILL HAD TO TRIM, THE LIP AND PULL OUT THE BED SIDES A LITTLE. YOU COULD FLARE THE BED MORE THAN I DID AND RUN A LOWER OFFSET. OR SWAP TO A HB OR 720 AXLE AND RUN WIDER.

i actually decided it was better all around to do the toyota conversion it opened tons of wheel options and shortened everything up god that would have been such a headache working with the six lug