Looking to modify my beloved Gixxer 155: Suggestions?

I was thinking of a suspension upgrade, ideally from a adventure bike. The Himalayan 411 has 41mm front forks, so does my Gixxer.

BHPian Shumi_21 recently shared this with other enthusiasts:

My Gixxer 155 will be 10 years old in September and would have crossed 2L km too. The motorcycle is still mechanically flawless with only the regular periodic maintenance required. I intend to keep using the bike for commuting to work, on the perennially potholed roads of Mumbai.

I was thinking of a suspension upgrade, ideally from a adventure bike. The Himalayan 411 has 41mm front forks, so does my Gixxer. Would a swap be possible? Like if I were to buy the 411's front and rear suspension from RE and get it fitted to my Gixxer with the help of a FNG. Any advice/recommendations/cost estimates on this would be amazing.

The second upgrade would be cosmetic. I'd love to have a round headlight with a retro style cowl like below:

The image I have of the finished bike in my mind looks something like this:

Please excuse the bad photoshopping. The sloping pillion seat would be straightened too.

And finally I'd require to get the chasis sanded for rust and then repainted, so I was thinking to get a new retro style paintjob of red, gold and black not very different from the picture below:

Thoughts/opinions/advice?

Here's what BHPian b16h22 had to say on the matter:

Honestly, leave it as it is. You can trial around with suspensions from other bikes but none of it is going to be a plug and play fit. It'll take a lot of fiddling to to even get a useable setup. And it'll be still somewhat terrible due to the sports bike geometry of the Gixxer. You have to be mechanically quite good to do the necessary research & homework and if you trust an FNG to do all that work, it won't end well.

The scram forks may fit being a 41mm unit and that is not a given. You'll also have to swap the whole front end including the 19" wheels and brakes as stock Gixxer wheel won't fit. Another option is swapping the whole 19" wheel and forks from the Vstrom 250 SX. But Vstrom gets similar suspension travel to the Gixxer and it won't be much of an improvement. Now, you need to trial & error to find a taller rear shock that fits and matches the front height increase. Otherwise, your bike's geometry goes for a toss and it'll handle poorly.

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