I KNOW THIS IS AN OLD THREAD BUT PLEASE READ!!! DON'T GET SCAMMED BY JG ENGINE!!!
I just recently decided to go and purchase a head from these guys. They are thieves! Their customer service may seem nice at first. They'll reply to your emails quickly and all, but as soon as you make your payment thats where it ends.
I ordered a Pro Series B18C head and was promised that it would be done in 2 1/2 weeks. I waited over a month!!! They kept coming up with excuses. First they told me that they were backed up with orders, then they said it was done but they accidentally worked on the wrong head. I ordered a B18C head and they accidentally worked on a B16 head. I needed my car done so I told them "whatever, I'll take the B16 head". When it was time for them to ship it, they had more excuses... I told them refund my money if they couldn't complete my order, they wouldn't reply. They also never pick up their phones. I couldn't take the lies anymore, I was done! I then did some research and came across this thread and a few others... I started to worry so I filed a dispute before I lost all of my money. Luckily, I was able to recover it on PayPal. If you are an out of state customer like I was then beware!!! Trying to get your money back across state borders is harder and more time consuming than you may think. Never use a money order or check. Always use a method you can track or use as evidence.
Don't be fooled like I was. They may seem to have a lot of content on their website and they may seem legit..., but they are liars and thieves. Beware of these guys...