On my old International backhoe the seals might have been easy to get (plenty of places on the Net) but I never was sure with the kits exactly what I'd be getting and I hate to have return things. I ended up taking the cyclinder apart and took it to our local hydraulic shop. They had most of the parts in stock but had to order some took 2 days and I was back in business. They installed the o-rings and the guides and the main seals on the gland and the piston. $80 . I brought it home and install into cylinder then onto boom. Yours maybe less expensive because this was a 4 1/2" ID boom cylinder.
Sorry I couldn't give you any info on the net approach but I looked at hundreds and decided against all of them. Good luck to you.
By the way the hydraulic shop never even ask me what the cylinder came off, they just go by the size and material of the parts needed.