Too tall as well - I briefly looked into an S50 or S54 transplant into my Westfield.
The necessary mountings for the F20C / gearbox from the S2000 were available for the Westfield and seemed an ideal engine choice to me. Plenty of power and torque, a screaming 9000k red line, and one of the best gear changes. For those wanting more, a supercharger would yield over 400hp.
Congrats on the sale and good luck with the next car.