Wouldnt it be relitavely simple to switch a '91 240 automatic, to a manual when you do the SR20 swap?
Installaion of a clutch pedal, new center console, wouldnt that be the most obvious things that i would have to do?

hey, im doing a tranny swap when i do my swap wit a RB20DET into a 93 240sx,
ya i do believe it would be along those line well try asking heavythrottle
www.srswap.com (http://www.srswap.com)
same company they have a step by step guide on the site there was one part on it concerning the tranny, and if it doesn't answer all of your questions you can email them they were pretty helpful to me.