Thank you sir - you are right that I haven't wasted time in building 2F but unfortunately i was a little more (i would not say stupid :P) inexperient that i built Toyota L (2200cc diesel) engine for it
which obviously had to thrown away after its first road test
was seriously under powered actually.
3B was not available anywhere in lahore but eventually after a quest of one month, i was lucky to find a junkyard owner in bilal gunj who was about to cut an accidented bj73/74 and agreed to sell its engine and gear to me so i got them from him 
PMed you the purchase price 