Look at Allstar Performance part # ALL 10188, (Summit sells them)
It's the "direct hook" model that incorporates the snap-hook at the point of the ratchet so you don't have to crawl under the car to "tighten the strap down". They're made in the USA by M&R products (formally in NJ) and packaged for Allstar......I'd also suggest using axle straps w/Delta rings & sleeves, they're offered by M&R as well.
Check out M&R (
http://mrproducts.com/)
If you prefer cheaper "knock-off'" straps, The Stafford Springs Swap meet is coming up on April 15th.
BTW, The new RV & trailer look awesome going up Rt 495,