I have been thinking about putting a GM TBI and the GM 1227747 computer on my 77 F250 4x4 with a 69 460 in it. Very similar to the Howell kit but from junk yard parts. I would also use a GM 8 pin control module and let the computer control the druaspark distributor. Howell kits control fuel only. I have made up a couple systems for a Jeep 258 and they work really well. Jeep used the Ford control module and the duraspark distributor also and real easy to convert it to the 8 pin GM control module and let the computer control the timing .I have a running system on a Jeep 258 for under 200.00. You are not going to get a lot of power from this BUT you will get instant starts, smooth idle at any alatuide, Its ability to adjust air/fuel and timing on the fly, and may, or may not get +1-2 mpg at best on a 258 Jeep motor. It is a really simple system and very easy to adapt to the motors needs as the 1227747 ECM has the ability to learn and adapt new maps to better understand the engines needs, and with the Cal-pack in it, it can go into open loop mode if a sensor goes wild and will go into limp home mode. So I have really been thinking of trying it on my Ford. It is just a hobby for me but not all computer controlled things are bad.