quick blue flame exhaust question

Dec 10, 2009
544
0
bideford, n.devon
hey all, ordered a cat back system at christmas and finally went to get it fitted today only to get a fone call about an hour later saying it couldnt be fitted coz of the difference in bore diameter as the bf system is 2.5 inch :cry:
my question is, is there any way it can be fitted without spendin hundreds more on down pipes and decats/ sports cats? or should i get saving?
thanks
 
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