Husky parts certainly aint cheap here in Aus. The local dealer quoted me $120.00 for a head that would fit the .155 diamond edge and the 252rx, he gave me this part number 531009226 , on looking it up it appears to be no longer available or produced ?
perhaps that's why it was so expensive ,, its an antique,,LOL. Glad you pointed out the t55-x head or though the closest I can find in aus so far is a t45x and this retails for $70,,stihl waiting to hear back from the husky dealer as to whether he can get the t55-x and for how much.
Yeah had the 252 running,,packs quite a punch although one downfall is the shaft is quite short,, kinda thinking it was designed for forrest thinning more so than grass bashing which was my intention as my fs 480 is heading into some hard earned twilight years.
cant remember if it was you or not but I remember in some earlier threads people were after the Husqvarna shredder kits which seemed to be obsolete, just thought I would put this link up to the kit anyway
appears it is available out of New Zealand
http://www.expertmowers.co.nz/accessories/trimmer-and-brushcutter-accessories/5448429-01.html
Good luck on your choice of brush cutters the 345r looks good,,45.7cc is a nice size,, my favourite machine is my fs 480 which is 48 cc.