Karlos g would do it much cheaper as would rob at boost monkeys
There's no work to fit it other than plug it in
It's upto you to be honest mate but for me I wouldn't live mapp an old system like ofab, when ofam is so cheap
I'm in the same boat as you zetec turbo on ofab, and run out of money and could get it running as it is, but it broke last time due too a poorly set up ofab, so I won't do it again