I can't be certain how much of Stratos was Javlin or vise versa but I do recall owning 3 separate 201's and the hull shape was un-mistakably Stratos. To my knowledge the Javlin moved in with Stratos during the companies decompression which leads me to believe Javlins may have adopted some Stratos characteristics. The original Turbo V stratos hull lasted until 92/93 where the XL took over. You can tell a Stratos XL from most all other boats due to its radial strakes. Conventional boats had sharper 90 degree steps between strakes but the XL employed arched strakes which where much smoother cutting through water. Every Stratos hull from my 93 though the last 2017 EVO had this hull design characteristic with exception to the VLO line. The original 201 was 20'1" and this hull became the 200 XL when the company stretched the hull to 20'9".Johnny Morris, being the last owner of Stratos, has since incorporated this hull characteristic into his Nitro brand. To my knowledge, the XL was all Stratos so when someone says that Stratos was using a Javlin hulls, it is more likely to be the other way around. I always compared the Javlin's to the older Turbo V hull Stratos' but Stratos was the flagship of the three bass boat lines and presumably lead the pack in R&D. Before I ordered my first 201 they where advertising it setting speed records with an Evinrude Limited Edition so the hull had a year under it before public sales in late 92. Someone may need to contact Alan Stinson to be certain but I do recall he was the designer for the XL.