hi tiv...saw that u r from Sri Lanka...m next door neighbour in Bangalore,India.
I hv a 110 2.5NA mil spec...runs good...but finding spares is quite a task here in india.
How is it in Sri Lanka?...i remember seeing on TV Sri Lanka Army has Defenders...just a naive suggestion...u could get a mil engine frm one of the scraps/mil surplus...correct me...i believe they have 2.5NAD.
cheers
Adi