94 idi performance parts?
 

is there any performance parts for the 1994 ford international idi turbocharged engine?

yes

the best freebi i can think of is the injection pump can be turned up real easy.

DPS makes injectors and pumps, hypermax makes a cowl induction kit, banks sells a upgraded down pipe.

Is this a good investment, and is the price reasonable ?

Banks Power Gale Banks Engineering 52105 - Banks Power Turbo Downpipes - Overview - SummitRacing.com

thats for the powerstroke. you need to call them up to get the one for an IDI. IIRC it costs around 100 bucks.