i'll be pointed : for reasons of money & info i have resourced here , i'm going to order a 2003 Focus SVT fuel pump to substitute for a replacement ( ruturnless ) 99 CSVT . ( car will not start , believe disc screen is blocked )

i understand there is some amount of modification required . what is the extent of making this decision ?

i would like to avoid losing the money saved in the purchase cost by paying for extra labour to complete this !

comments & recommendations appreciated !!!