This exists. I have this.
So... This car was originally hacked in the 90s for a Buick v6, and unsurprisingly, never really got finished. I bought it out of a Santa Cruz barn.
Now, after roughly 34598751349807 hours of work, it runs a Suzuki Hayabusa motor using the "Miatabusa" kit that adapts it to the stock 901 five speed. The power comes off the primary shaft in the Hayabusa motor so it's geared down 0.6x. That way everything spins the correct speed. Uses a Kennedy clutch.
Just a 'Busa motor seemed kind boring, so it's also turbo. I'm limiting it to a 10k redline, even though the motor stock is good to over 11.5k. I also limited the boost to 10psi because I felt like the Craigslist "good core" 901 trans was going to start having big feelings past 300whp on the Church Test dyno in Long Beach. The turbo is one of the two off a Ford GT and is definitely underutilized at that low boost level. If I beefed up the Busa motor guts, a gear shearing 500hp is totally possible with the parts I have.
Other highlights are: a custom water to air intercooler/plenum, dry sump, and Link standalone ECU. All the pumps and fans are PWM controlled by the ECU. Thing is pretty docile to drive, although the sintered clutch is a bit rough.
Here, click on some stuff. Pardon the smokey Dyno run. I had chocolate in my peanut butter. Fixed now.
https://youtu.be/XSm8oAdHG28
https://youtu.be/XG_SZYkhEW0
https://youtube.com/shorts/l6TOsdgRNK8
I've been meaning to post more about this on the 914 World forum, but it's time consuming to document all my bad ideas.