The Swap Over To A New Shell. 98 To 97

hi guys i wanted to see if anyone out there would be able to help me with a tech question
so my 1998 mustang Gt conv. automatic with a full dss racing engine. The shell is twisted so i purchased a 1997 mustang gt hardtop automatic fully stock motor. i plan to move everything over to the 1997 but i had one concern will i be able to move my ECU from the 98 mustang gt conv. to the 97 gt hard top without any problems? are they compatible how do i find out if it is or isn't. has anyone experienced this before. i would like to be able to keep my tunes without have to go back and re-tune them. thanks in advance for any help

good call on the pats ya i have all after market fuel rails and fuel lines and pump but its still running off of the factor ecu. i was wondering if anything needs to be repin.

i have a glen performance sump tank setup with dual 255 external pumps running dual 6an lines one up one return.