I've popped open about 50 tabs in my browser and I've searched far and wide- but I can't seem to find a single, simple list of what exactly are the board components I need to buy to complete a v4 speeduino board, from the bare board. I can see plenty of component "kits" listed but I'd rather buy the components individually myself.
Secondly, I'm planning to use the speeduino to replace the stock ecm from a 1991 chevy 2500 5.7l V8 running a distributor and TBI system. I'd like to keep the TBI as I swap over from the stock swirl port heads to sbc vortec heads and a roller lifter cam instead of the flat tappet. I'd rather not deal with the reflashing of the stock chip these days if I can avoid it, and honestly the ancient thing performs poorly when a tune is well done on it to begin with, let alone if it isn't, thus the reasoning behind using speeduino instead.
On a basic level, what are the primary things I need to concern myself with as far as tuning the ecm to work with this setup goes, and what systems do I need to be wiring into it?
Thanks in advance, and my apologies if my questions are too simple- I really have been trying to do my research the past week, but I'm kind of an old man and I'm having trouble wrapping my head around some of this.