Engine Rebuild or Crate Motor ??

[Tom75HJ]

Have a 253 that was running, 18months ago when it came out. Since then it has sat on shed floor un loved collecting dust.
The time has come for it to be replaced in the chassis.

Currently looking at sourcing a Supra 5 Speed Gearbox to put behind motor. Long distance country cruising

Motor is going to need a freshen up so am after some ideas as to which way to go in the engine department.
Currently located in Country SA

Thanks for your help in advance