I have upgraded/modified my RIMS unit, so the old one is for sale. I have completely disassembled and cleaned everything. You'll get the parts, and because I don't know the exact orientation of your setup, I'll save assembly for you.
8" x 1.5" Stainless nipple
2 x 1.5" Stainless tees
2 x 1.5" to 1/2" Stainless bushings
1.5" to 1" Stainless bushing (to mount the heating element)
1.5" Stainless plug
Here is what you'll get, minus the element.
Once everything goes together, it'll look like this (minus the heating element):
I used a 4500 watt low density element from Lowe's. Worked fine for my 10 gallon RIMS setup with only 110v AC.
Asking $75.00 shipped for the parts, interesting trades considered.