yo i have a question
my girlfriend skates 147 thunders (team, not hollow or anything) and her bushings blew out or something. idk what happened exactly but the thing is that they don't turn. she wants to switch the bushings out but aftermarket thunder bushings are hardly available in poland. the other options are independent and bones bushings. i'm guessing that independent bushings won't fit but what about the bones?
Indy bushings still fit just as easily in any trucks.
There are cylinder and conical so I would recommend the conical versions, probably the 90 duro orange ones, more than anything else.
I like to cut the tops down a bit just to have the kingpin nut sit a bit lower, but that is just me.
Bones work just as well too (only they blow out faster), but are sometimes better for lighter people who do want more turn so the mediums would be best.
If the stock Thunder bushings were too hard or didn't allow for enough turn, you can try cutting the tops down a mm or two at the most and trying them as is again.
Most bushings are still not too bad, even if parts of them start to break on the outside, they are often still ok on the inside areas and will usually end up feeling softer and more easy on the turn too.
With any bushings, you can run them exactly as per factory settings, or you can take out the bottom washer to really make them turn more (and costs nothing to experiment) before buying any new ones.
I would be inclined to have a good look at them first, before just going out and buying more, but that is just me.