Hey everyone, looking for info on medium duty steerable front drive axle for a build I'm planning. Its gonna be for a 91-93 gmc topkick with a detroit 6v53. The only one I have come across is a rockwell fds-75, they have hydraulic brakes (post '84 have disc brakes), came with a 4.88 ratio but doesnt seem like a popular one. so my questions are 1. how available are parts for this axle ( replacement ring and pinon to get the 4.88 ratio if I cant find one)?, 2. Is there any other axle that I should be on the look out for? I have tried searching in google and forums but not much success, keep running into the same walls everytime. Looking at the newer topicks with the pickup conversion they seem to run a dana 70 most likely beefed up a bit. the only downside i see to that setup is instead of running a duramax (not sure of the weight) and light duty bumper I will be running a 1600+ lbs detroit, and hanging a heavy bumper (homebuilt roadarmour style) with a hydraulic winch and running 46-53" load spec military tires. and dont think the dana 70 will be up to the task. any info or advice will be great
oh btw the 2 1/2 ton top load rockwell will not work for me, the 6.72 gears are just too much and 1200 bucks each for replacement ring and pinion to bring it down to a 4.60 ratio is way outta my price range and trying not to use custom parts in the drive line.