Malleable implant

I am 32 year old male suffering from ed from last 14-15 years recently diagnosed with neurogenic ed
Doc told implant is the way

Now planning for malleable implant tactra

Current erect length is 17.3 cm
Spl is 20 cm

No peyronies prispiam no infection

Heavy smoker from last 15 years

Just wanted to know what final visible length I can get after implant

Cannot afford 3 peice so please don’t suggest

Malleable implantes please give your feedback

Can discuss on dms as well