Ireland huh. Anyone in the US will be glad to handle it. Aside from the cost of shipping, I'd highly recommended HJR. Here Herr juggs racing is top of the line. Here's a link to specific blaster porting
http://www.herrjugsracing.com/Yamaha_Blaster.html
I've had him do 2 banshees for me. 1 I sold, and the other is making 68 HP on stock carbs/crank. Give him a call. He's spent way more time sitting on the phone with me getting my bike dialed in when I had jetting problems. Good luck!