Vintage Tiger Tiger Replicant

Hi, Im a newbie looking at returning to biking in particular touring to include the Finance Director. I'll be honest have not ridden properly for a while but have kept my toes in with an electric retro scooter. Previous bikes in order, YAMAHA DS7 (250) Have you seen the prices wish I'd kept it....Honda CBX550 & a naked SUZUKI GSF600. The pleasure vehicle budget isnt huge but a Steamer is my desired entry point. The goal will be a Tiger 1050.

Can I buy a Steamer on ebay...yeah right. Not just Triumphs but a lot of bikes seem to suddenly not be available for sale anymore so guessing they pulling them if theres not enough interest. The 955i is more common but I cant (i just cant do it) get over the bulging fuel tank akin to a lava flow over seat and engine.

My question is can I fit a Steamer seat & tank to a 955 an potentially the headlight and fairing?