Spike
I am happy to help if you were building a 1600K, but I agree with alackofspeed, limpabit has built the 2Lt series, there are a few others who have as well. I must say after going in one you will be pleasantly supprised, look out 911 owners.
Now you have found the forum, hopefully you would be able to have any concerns or isues answered.
In the matter of the ecu, you may find a breakers / ebay can help.
You may also find some benifits looking at the Marlin owners club websites.
http://marlinownersclub.com/
Steve