My 1st defender

Hi just brought a 1986 defender 90 truck cab which has had a disco 200tdi engine fitted or should I say dumped in as it's not been done very well with all the usual pipes cut and kinked so iam iam going to be redoing all that and getting it ready for some off road fun so thought I'd join here for some advice as iam having a few problems

Hi there & welcome
Hope you get things tidied up in the engine department, but there is an absolute wealth of knowledge from all the guys & girls on here