I replaced mine about 6 months ago and honestly, I did not find that it was that terrible of a job. It is a little frustrating operating blind to find some of the clamps but a little patience goes a long way. I picked up a fairly inexpensive remote clamp on Amazon which worked well and I would recommend one. I did not dremel the tank and i reused the existing clamps
I found it comparable to replacing the top in difficulty. Again, patience is your friend here. Lastly, if i can do it ANYBODY can do it. Best of luck and let us know how it turns out.