I have my hands on a 89 rx7 complete shell (NO MOTOR) who carrys rx7 engines ?? and i'm not no a rotary GUY, trying something different. 8D and whats the price that should be decent for these motors..

how hard would it be to throw in (various engines) just saying:

F20C
SR20DET
2JZ


but mainly looking for 13b or 13btt engines only unless theres something cheap like a LS1 8D