Does anyone make the rocket and base?

I am looking to make my rocket pack, but the actual rocket and base are a little intimidating when it comes to designing it. I can make the rest of the pack, but I was curious if anyone just sold those two parts for an economical price? I don't want to purchase a pack unless it is under 150 so I am pretty sure I'll be making it myself.

i was casting the rocket base awhile back... it wasn't perfect but i was selling them for pretty budget prices..

http://www.thedentedhelmet.com/showthread.php?t=30192&highlight=rocket+base

if you want to check it out