Rhino Engines / ripoff
Be very careful with this company. They promise and confirm shipping of 3 days to get the order. After 10 days of excuses I cancelled the order. I keep getting told that the refund is in process and that they would mail the credit memo. Three weeks of " has been processed" I get a call that it fell thru the cracks. 3 weeks later I still do not have a refund or even the credit memo they were sending.
I suspect that if you place the order you will not get the materials nor a refund but you will get to hear the most annoying canned lip service ever. They have lots of practice.
You may want to try ATK engines. Got it in three days and had the core refund in 2 weeks.