Big Mike, I hate to correct the guru on this board, but the 5mge motor is a straight six, not a v6. Most people think this because it has 2 valve covers, but I can assure you they are a straight configuration.

Oh man, thankyou for catching that. Of course the M block is an inline 6. I keep thinking about the VZ block when ever I think about weak 6 cylinders

And I completely agree with hudlenutz, If you are going to go through this trouble, then why not go 7M? The 7M is definately a stronger engine, and I am sure it reminds the 3RZ that it is just a 4cylinder.

Question: What Engine mounts can you use? Do the stock M mounts line right up with the R mounts on the frame? Or do you have to buy some aftermarket conversion mounts? If so, how much do they run?

Thanks,
BigMike