u/Decent-Breadfruit-24

I am still on TSW5 and the may sale is the perfect opportunity to upgrade imo, I know TSW7 is coming out at the end of the summer but the TSW6 special edition includes most of my favourite routes as well as the TSW6 routes that come in all editions. Is it worth it to get it or should I just get some other discounted routes for TSW5 and wait for TSW7 (even though I don't wanna wait lol)

I'm sorry for the stupid question, but I just don't know how to do it. I've missed the free period of tsw6 and I have only 5 for now. Do I need to buy a tsw6 route and the game will install, or there is another way? I also want to know how do I transfer my current tsw5 routes to tsw6? Once again, this is probably a stupid or a low-effort post but I just need help!

I want to make my Kenworth K900 sound even better, and I've seen SlavJerry makes some nice sounding engines, in your experience which is the best one?