No. Assuing you're talking about the speaker sizes, Mk2 Golf front door speakers (on late spec cars without front quarterlights anyway) are 5 1/4 inch whilst
Mk2 Ibiza facelift front door speakers are 6 1/2 inch. If you mean the plastic moulding, they're totally different - though I guess you'd have gathered that from the fact the speakers are different sizes anyway.