I would never buy a composite block that you see on ebay. If you think you need a 1.5 or 2" cause it's an SUV w/spare, I'd do a MAX Cam blocks, which come in 1,1.5 and 2"
http://www.trailduty.com/product_inf...roducts_id=584
They make torsion keys as well, but I like Truxxx keys the best.