TPI Swap Q's

[my new 72]

Hey guys, I just picked up a TPI speed density system minus injectors, computer and wiring harness on the cheap and was wondering if you guys with experience can send me in the right direction as far as what to get and where to go for the rest of the parts to get this thing done. It is going on top of my stout 385 with 10.2:1 comp. I want to be able to tune this thing with my laptop for optimal performance and mileage. What brands of ECM's are capable of this, and are there even any aftermarket ECM's available for what I want to do. I will also need a wiring harness, what is a good brand to get? Also, is it possible to port the intake any to make it flow a bit better? I will also need some pretty beefy injectors for this thing, what do you guys recommend? I also have an MSD 6AL box already and the TPI is coming with the dist., can I use the MSD box still? I am pretty sure I can, but I just wanted to check here before I drag out every manual known to man looking for the information. Thanks for all the help. It should be here on Thursday.