Want to put a 4.6 in a 1st gen?...

We often get asked about installing the 4.6 Ford Modular engine into an RX-7.
Here's a pic of one set into a 1st gen. Major oil pan surgury is required, as well as removing the brake booster. It can be done, but it's not easy. Below is also a comparison pic of the 5.0 beside a 4.6...even the SOHC 4.6 shown here is as big as a big block.