A Rock Shox was an option on the Aquila when I bought mine a decade ago but can't remember what model. It is currently 1 1/8" threaded and I am willing to go threadless unless I was confident the threaded fork I might buy would fit. I have recently started riding again and noticed there is more flex in the neck than I like. That is part of the reason I would be willing to go threadless, to get a stiffer stem.

I have a tight budget, probably less than 125.00 + the dollars to convert it to a threadless configuration.

I was looking on the 'Bay but there are so many variations it is just mind boggling.

I would appreciate suggestions for makes/models and I will go back and research the specifics and ask additional questions later.