ok so im putting in a ford 9" rear end in my 86 f150 4x4. my front gears are 3.54..can i run 3.54 gears with 3.50 gears..im wanting to put in a posi trac before i put the rear end in. but i want to also be able to match the gears so i dont mess anything up in my 4x4. i could use some ideas on gears to run and also to my question would i be ok. if so it would save me some money...im running 36 swampers on the truck so i want a good strong gear ratio

thanks