I've used Snyder's many times and NOT impressed. VERY slow. Actually unbelievably slow. They'll promise you 2 weeks, expect 3-4 months. This has happened the 3 times I had my GN block honed/line bored/cleaned up. And don't even get me going on my 427 C5R block for the Corvette. After 3.5 months they finally told be they weren't able to hone the cylinders because they didn't have the right equipment. Ended up sending it to a shop in CA that had the EXACT same honing machine and they had it back to me in 2 weeks. I've learned my lesson. There are NO good machine shops on this island (that I could find at least). Pay the shipping and send it to a reputable TR machine shop on the mainland. If you're just looking to get the block cleaned, then I think Snyder's can do it reliably, just not on time... Most of the guys on here remember my fiasco's with Snyder's though. Unfortunately, after trying to not use them again, I found that the other shops on the island are even worse....
Just my 1/2 cent.
Derrick