you can always do a little measureing and head to the local salvage yard. once you have the measurements you need you can walk around the yard and measure up some and compare. you would be surprized if you didnt find exactly what your looking for. as for the tci kit i used it and it was pretty much a bolt in other then having to drill a few holes. the only thing i added was a backing plate on the front spring mounts because of a rust issue behind the original front spring bracket. i am sure you could use the 3100 setup on the 3600 with just a little research in the assembly manual and a tape measure. i got my kit off ebay farely cheap and every thing was included. as far as a four link suspension i was told from a local rodder that used a four link in one of his rods that he didnt like them because of the tendancy of the rear axle to steer through corners. i really apreciate this guys words of wisdom because of the work he does with his cars. which have all been award winning and he actually drives them about 10,000 miles a year.
