If you measured from flange to flange on your slide out and got 153-1/2" then the correct slide out topper for your trailer is the Solera RV Slide-Out Awning - 13'1" Wide - 48" Projection -White # LCV000163300; it's also available in Black # LCV000168109. view full answer...
Okay let's get started here with the suspension for your 2012 Skyline Koala 27CDS with 3,500 lb Axles; for the first part regarding your equalizers and suspension upgrade kit, so long as your current equalizer is spaced 6 inches (or close to it - I am unable to tell from your parts list if the drawing of the equalizers are your measurements or referencing something else) apart from bolt hole to bolt hole you can use the Road Armor Shock Absorbing Equalizer Kit # LC696740 with the MORryde... view full answer...
For a replacement leaf spring the part # e84SR would work great as this is a 2,000 lb axle leaf spring with exact dimension you have of 2-3/8 inches. For replacement shackles we have the part # TRSL313 which is the size you need of 3-1/8 inches. For wet bolts you'd want the part # 126B2 and then for cushioned equalizers you could use the part # LC279687. view full answer...