if you want to use a kit, check out
www.customconversions.com by jaguars that run. These guys have the best info and parts.
I installed my 350 without a kit and had to do some fabricating (new trans mount, shorten driveshaft, motor mounts, etc.) It cost me about $2000.00 (motor and trans included) to install mine. I love it on the dragstrip, but I can't seem to stay off the gas pedal on the street. Tons and tons of fun !!!